KR101442711B1 - Vacuum freeze drying method and drying feed manufacturing method for companion animal manufactured by the method - Google Patents

Abstract

The present invention relates to a vacuum freeze drying method and dried food for companion animals produced through the same. According to the present invention, high concentration ingredients are added in an object pre-treating step so that moisture in the object is firstly removed through osmosis. Moreover, in a vacuum drying step, water particles frozen in the object are vibrated through ultrasonic wave vibration so that sublimation is accelerated. Accordingly, drying time can be remarkably reduced, and dried food for companion animals can be mass produced.

Description

[0001] The present invention relates to a vacuum freeze-drying method and a method for manufacturing a dried animal feed for a companion animal,

The present invention relates to a vacuum lyophilization method, and more particularly, to a vacuum freeze drying method capable of drastically reducing a processing time by using osmotic phenomenon and ultrasonic vibration, and a dry feed for companion animal produced by the method.

Vacuum freeze-drying is a method in which a raw material is rapidly frozen and then sublimated in a vacuum state to be dried. The vibration freeze-drying method has less destruction of taste, nutrition, enzymes, absorption rate, quick restoration and low moisture content, and can be stored for a long time.

However, in the conventional vacuum freeze drying method, it takes about a day or two to freeze the raw material and to dry it in a vacuum state. This is because the content of water contained in the raw material is large.

In other words, chicken breasts, beef, tuna, etc. are used as raw materials to produce snacks and feeds of companion animals. Because of the high water content of these raw materials, freezing time is long and vacuum drying process It will take quite a long time.

Therefore, although the demand for feed or snack is increasing with the increase of the number of companion animals, the conventional vacuum freeze drying method has a disadvantage in that it requires a considerable processing time and can not be mass-produced.

On the other hand, Korean Patent Laid-Open No. 10-2012-0124947 is known as a related art related to vacuum freeze drying.

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and an object of the present invention is to provide a vacuum freeze drying method capable of mass production by using osmosis phenomenon and ultrasonic vibration, The purpose is to provide feed.

According to an aspect of the present invention, there is provided a vacuum lyophilization method comprising: (a) washing an object with water to remove foreign matter; (B) injecting a high-concentration material into the object to discharge moisture contained in the object by osmosis phenomenon; (C) washing the object with water to remove high-concentration material remaining on the object surface; (D) blowing hot air to the object to dry the surface moisture; (E) putting the object into a freezing device and freezing it; And (f) injecting the object into a low-pressure apparatus and drying the object at a low pressure.

Here, in the step (d), the moisture on the surface of the object may be dried using hot air at 40 to 60 ° C.

In the step (f), the ultrasonic wave is radiated to the object placed in the low-pressure apparatus, and the frozen moisture in the object can be sublimated by the vibration of the object particle by the ultrasonic waves.

On the other hand, the present invention includes dry food for companion animals produced by the above method.

According to the vacuum freeze-drying method of the present invention, a high-concentration material such as salt, sugar, or a nutrient is added to an object washed with water, so that a part of the high-concentration material is absorbed into the object, and moisture contained in the object is discharged . Therefore, since the moisture content of the object is extremely low, the subsequent drying time can be greatly reduced.

In addition, after drying in a vacuum (low-pressure) state after the freezing process, the ultrasonic wave is radiated to vibrate the moisture particles contained in the object, thereby increasing the kinetic energy of the moisture particles, have.

That is, according to the present invention, by using the osmotic phenomenon and the ultrasonic vibration, it is possible to mass-produce feeds for companion animal by greatly reducing the amount of water contained in the object and drying time, and the cost of the finished product can be lowered.

1 is a flow chart for explaining a vacuum freeze-drying method according to an embodiment of the present invention;
FIG. 2 and FIG. 3 are conceptual views illustrating a process for performing the vacuum freeze-drying method shown in FIG. 1;
4 is a conceptual view showing a process of performing a vacuum freeze-drying method according to another embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. However, some configurations which are not related to the gist of the present invention may be omitted or compressed, but the configurations omitted are not necessarily those not necessary in the present invention, and they may be combined by a person having ordinary skill in the art to which the present invention belongs. .

FIG. 1 is a flow chart for explaining a vacuum freeze-drying method according to an embodiment of the present invention, and FIGS. 2 and 3 are conceptual diagrams showing a process for performing a vacuum freeze-drying method. Hereinafter, a vacuum freeze-drying method according to an embodiment of the present invention will be described with reference to FIGS. 1 to 3. FIG.

The vacuum lyophilization method according to the present invention can perform the pretreatment process of the object 1 using the conveyor belt 10.

The vacuum freeze-dried object 1, that is, the raw materials such as the feed of the companion animal, the chicken breast, the beef, the tuna, etc. to be used for snacks is moved on the conveyor belt 10 and is moved. The object 1 on the conveyor belt 10 enters the first cleaning chamber 20.

A first washing water spraying nozzle 21 is provided at an inner upper portion of the first washing chamber 20, and water is sprayed through the first washing water spraying nozzle 21. Accordingly, the object 1 passes through the first washing chamber 20 and is washed with water sprayed from the first washing water spraying nozzle 21 to remove foreign substances on the surface. The object 1 from which the foreign substance is removed enters the water discharge chamber 30 thereafter.

In the water discharge chamber 30, a high-concentration material spray nozzle 31 is provided. The high-concentration material spraying nozzle 31 blows a high-concentration material 32 such as salt or sugar in the form of fine powder together with air to form a high-concentration material 32 at every corner of the surface of the object 1 evenly spread on the conveyor belt 10 (32).

When the high-concentration material 32 is put on the surface of the object 1, the moisture contained in the object 1 is discharged by the osmosis phenomenon.

An osmotic phenomenon is a phenomenon in which the solvent moves from the higher concentration side when there is a difference in concentration between the two solutions through the semipermeable membrane. The surface of the object 1 is covered with the high concentration material 32 having a high concentration when the salt or sugar in the fine powder state is scattered by the supply of the air and equally adhered to the surface of the object 1 by the high- And the interior of the object 1 is in a state containing moisture having a low concentration. Therefore, water with a low concentration is discharged to the surface of the object 1 which is the higher concentration side. Of course, as the water is discharged from the object 1, the surface of the object 1 is mixed with water and salt (or sugar) and flows into the brine (or sugar water).

 Of course, the high-concentration material (32) may be a nutrient in the form of liquid which is added to feed of animal companion or snack food, in addition to powdered salt or sugar in powder form. In other words, the liquid material is uniformly sprayed onto the surface of the object 1 through the high-concentration material spraying nozzle 31, so that water can be discharged from the object 1 by the osmosis phenomenon due to the concentration difference.

When the high concentration material 32 is evenly sprayed on the surface of the object 1 in the water discharge chamber 30 and the moisture in the object 1 is discharged by the osmosis phenomenon, the object 1 enters the second cleaning chamber 40 .

Like the first cleaning chamber 20, the second cleaning chamber 40 is provided with a second cleaning water injection nozzle 41. Therefore, when the object 1 passes through the second washing chamber 40 and is sprayed from the second washing water spraying nozzle 41 by the water of strong pressure, the brine, sugar water, residual nutrients, etc. The high-concentration material 32 is washed with water and removed.

Of course, when the high-concentration material 32 is sprayed on the surface of the object 1, part of the high-concentration material 32 is absorbed by the object 1, although the moisture in the object 1 is discharged by the difference in density. That is, a part of salt or sugar is absorbed by the object 1 to serve as a seasoning to add flavor, and the nutrient ingredient is partially absorbed in the object 1 and can be used as a material for nutritious snacks.

Therefore, a part of the high-concentration material 32 is already absorbed into the object 1 entering the second cleaning chamber 40 while the second cleaning chamber 40 is in a state where the part of the high- The remaining material is washed.

Further, after the moisture contained in the object 1 is discharged as an osmotic phenomenon and the remaining high concentration material 32 on the surface is washed, water is left on the surface of the object 1 by the washing water. The object 1 with the water remaining on the surface continues to enter the surface drying unit 50.

The surface drying unit 50 is provided with a hot air supply unit 51. The hot air supply unit 51 blows the heat generated in the heater (not shown) into the object 1 in the surface drying unit 50 through an air blower (not shown).

Therefore, the water remaining on the surface of the object 1 is primarily dried by hot air.

If the temperature of the hot air is too low, the drying efficiency is deteriorated. If the temperature of the hot air is too high, the object 1 may be ripe, so that the temperature of the hot air is preferably 40 to 60 ° C.

As shown in FIG. 3, the object 1 to which the moisture is discharged from the object 1 owing to the osmosis phenomenon and the surface of which the moisture is primarily dried is supported on the drying pedestal 80 in a uniformly spread state. And is frozen < S150 >. At this time, most of the water in the object 1 is discharged by the osmosis phenomenon, but the remaining moisture is frozen. Also, the freezing temperature and time of the object 1 are determined differently depending on the kind and amount of the object 1. [

The object (1) frozen in the freezing device (60) for a predetermined time while being supported by the drying pedestal (80) is then introduced into the low pressure device (70).

Pressure device 70 includes a low-pressure chamber 71 in which the object 1 is located, a vacuum pump connecting portion 72, and an ultrasonic generator 73.

The vacuum chamber connecting portion 72 is provided at one side of the low-pressure chamber 71, and the vacuum pump connecting portion 72 is provided at one side of the low-pressure chamber 71, The space inside the low-pressure chamber 71 becomes a vacuum state, that is, a very low pressure state, by the operation of a vacuum pump (not shown).

In general, water is known to change to gas at 100 degrees Celsius, but lowering the pressure will lower the boiling point. That is, when sufficient decompression is achieved, water is converted (sublimed) into water vapor even in a frozen state at a temperature of -40 ° C.

Therefore, when the frozen object 1 is placed in the low-pressure state in the low-pressure chamber 71, the frozen moisture contained in the object 1 is sublimated without passing through the liquid.

In this case, the time taken to sublime most of the water contained in the object 1 in the low-pressure chamber 71 may take a very long time of about two days. For this purpose, the ultrasonic generator 73 is installed in the low-pressure chamber 71 do.

Ultrasound is a sound with a frequency above about 16,000 Hz, which is higher than the audible frequency. Because the wavelength is very short, it propagates far away in water or oil, and the direction is sharp. That is, when ultrasonic waves are emitted to the object 1 containing moisture, the sound waves are deeply transmitted to the inside of the object 1. [

Ultrasonic waves also have characteristics of being transmitted while vibrating the medium. Therefore, the ultrasonic waves which have entered the object 1 cause rapid and strong vibration on the moisture particles contained in the object 1. As a result, the moisture particles contained in the object 1 quickly undergo molecular motion due to the vibration of the ultrasonic waves, and the kinetic energy of the frozen moisture particles sharply increases, thereby further promoting the sublimation phenomenon.

When the sublimation phenomenon is promoted by the ultrasonic vibration in the low pressure chamber 71 and the moisture in the object 1 is dried, the product is completed, packed and circulated in the market.

As described above, in the vacuum lyophilization process, the phenomenon in which water is sublimated without passing through the liquid is used. Therefore, the volume of the object 1 is not contracted due to dehydration, the phenomenon such as surface hardening does not occur, And physical and chemical changes of tissues and the like are extremely small and can be stored for a long time because of low water content.

4 is a conceptual view illustrating a process for performing a vacuum freeze-drying method according to another embodiment of the present invention.

Concentration material 32 such as salt, sugar, or nutrient is uniformly distributed on the surface of the object 1 in the water discharge chamber 30, the object 1 is placed in the container 35, The operation of the agitator 36 causes the object 1 and the high concentration material 32 to vigorously react with each other by agitating action to maximize the efficiency of the osmosis phenomenon and actively emit moisture. After the water is discharged from the object 1 by the agitating action in the container 35, the process is performed after the residue of the salt, sugar or nutrient remaining on the surface of the object 1 is charged into the second washing chamber 40 .

As described in detail above, according to the vacuum freeze-drying method of the present invention, by injecting a high-concentration material 32 such as salt, sugar or nutrient into the object 1 washed with water, So that some of the components are absorbed, and the moisture contained in the object 1 is discharged by the osmosis phenomenon. Therefore, since the moisture content of the object 1 is extremely low, the subsequent drying time can be greatly reduced.

In addition, since the frozen moisture particles contained in the object 1 are vibrated by radiating ultrasonic waves when the object is dried under a vacuum (low pressure) state after the freezing process, the kinetic energy of the moisture particles is increased, Time can be shortened.

That is, according to the present invention, by using the osmotic phenomenon and the ultrasonic vibration, it is possible to greatly reduce the discharge time and the drying time of the moisture contained in the object 1, thereby massively producing feeds and snacks for companion animals and lowering the unit cost.

In the above description, the object 1 is conveyed through the conveyor belt 10 and the pretreatment process is continuously performed. However, each process may be progressed step by step using a work chamber (not shown). For example, the object 1 and the water are poured and rinsed into the work chamber a plurality of times to remove the foreign substance, and then the high-concentration material 32 such as salt, sugar, or nutrient is added and stirred to be contained in the object 1 Concentration material 32 remaining on the surface of the object 1 is removed by pouring water and rinsing it several times so that the pretreatment process is not a continuous process but a step process .

In the low pressure device 70 shown in Fig. 3, the drying pedestal 80 is stacked in the low-pressure chamber 71, and then the ultrasonic wave generators 73 are provided at various points, The ultrasonic wave generating unit 73 is installed inside the low pressure chamber 71 and the drying support 80 bound to the rotary transfer device (not shown) The cost of installing the expensive ultrasonic generator 73 can be reduced.

That is, a feature of the present invention is that in the vacuum lyophilization process, the moisture contained in the object 1 is discharged using the osmosis phenomenon, and the kinetic energy of the frozen moisture contained in the object 1 is measured by ultrasonic vibration And the sublimation phenomenon is rapidly proceeded. Therefore, the facility for carrying out such a process can be variously changed, and the process using these modified facilities is also included in the claims of the present invention You can.

The foregoing description of the preferred embodiments of the present invention has been presented for the purpose of illustration and it will be apparent to those skilled in the art that various modifications, additions and substitutions are possible within the spirit and scope of the invention, And additions should be considered as falling within the scope of the claims of the present invention.

1: object
10: Conveyor belt
20: First cleaning chamber
21: First washing water spray nozzle
30: water discharge chamber
31: Highly concentrated material injection nozzle
32: High concentration material
34: Motor
35: container
36: stirrer
40: second cleaning chamber
41: second wash water spray nozzle
50: Surface drying section
51: Hot air supply part
60: Freezer
70: Low pressure device
71: Low pressure chamber
72: Vacuum pump connection
73: Ultrasonic wave generator
80: Drying base

Claims (4)

(A) washing the object with water to remove foreign matter;
(B) injecting a high-concentration material into the object to discharge moisture contained in the object by osmosis phenomenon;
(C) washing the object with water to remove high-concentration material remaining on the object surface;
(D) blowing hot air to the object to dry the surface moisture;
(E) putting the object into a freezing device and freezing it; And
(F) injecting the object into a low-pressure apparatus and drying the object at a low pressure,
Wherein the step (f) radiates ultrasonic waves to the object placed in the low pressure device to sublimate the frozen moisture in the object by the vibration of the object particles by the ultrasonic waves.
The method according to claim 1,
Wherein the step (d) comprises drying the moisture on the surface of the object using hot air at 40 ° C to 60 ° C.
delete A method for producing dry food for companion animals, which is produced by the method of claim 1.

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